Cisco 8000v Throughput

[saba53]

Hello,

We have bought Cisco 8000V Edge Software with DNA Advantage 1 Gbps Subscription.
I have some questions about it:
1. As i know, download traffic coming into the router is unthrottled (Rx is Unthrottled). Is it correct?
2. Also as i saw, Transmitted traffic from router is throttled (Tx is throttled). What does it mean exactly?
Do i have 1GB limit on every interface or is it aggregated? Also i found in documentation that this Tx varies with different software version, i mean that Entitled throughput & throttling in >=17.14.1a has 2G Tx, so transmitted traffic is now throttled at 2GB?

Thanks in advance

[Jens Albrecht · Accepted solution]

Hello @saba53,

1. Yes, Rx traffic is unthrottled as only Rx traffic counts regarding the throughput license.
2. The limit is NOT per interface but aggregated Tx traffic. 
   All outgoing (Tx) traffic from all interfaces combined must not exceed the licensed limit.
   Example: If you transmit 500Mbps on Gig0/0 and 500Mbps on Gig0/1, you will hit the 1Gbps aggregate Tx cap; exceeding this causes packets to be dropped or queued.

As you noticed with version 17.9.1a and beyond the limit is raised to allow 2Gbps aggregate throughput with a 1 Gbps subcription.

For details you can refer to the following document that gets regularly updated by Cisco:
Configure Licenses and Throughput for Cisco Catalyst 8000V Edge Software

You did not mention this point but according to this document the HSECK9 license is also required for this throughput level.

HTH!

[saba53]

Thanks very much sir.